A Time-of-check time-of-use (TOCTOU) race condition in the SMM communications buffer could allow a privileged attacker to bypass input validation and perform an out of bounds read or write, potentially resulting in loss of confidentiality, integrity, or availability.
https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-4013.html
Published: 2026-02-10
Updated: 2026-02-10
Base Score: 8.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:P/A:P
Severity: High
Base Score: 8.1
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: High
Base Score: 4.6
Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00012